Storage-battery attachment.



R. J. FLEISCHBR. STORAGE BATTERY ATTACHMENT.

@MD/W APPLICATION FILED JULY 5,1907.

Mfg,

. and State of Wisconsin, have invented cer- `an indicator in accordance with my invenare of acid-proof material. is suitably weighted, preferably with shot o,

,- UNITED sTATEs PATENT ,onEioE RICHARD J. FLEISCHER, 0F MILWAUKEE, WISCONSFN.

si'ToRAGE-BATTERY ATTACHMENT.

Specification of Letters Patent. Application mea :muy 5, 1907. smal Nd. 382,209.

Patented Deaaa, 190s.

To all whom it may concern:

Be it known that I, RICHARD J. FLEISCHER, a citizen of the United Sta-tes, and resident of Milwaukee, in the county of Milwaukee tain new and useful,Improvements'inf-/Storage-Battery Attachments, and I do hereby declare that the following is a full, clear, and exact description thereof.

The object of the invention is to provide simple, economical and eiiicient attachments applicable to storage-batteries to in dicate at all times and under all conditions the percentage or degree of charge therein, said invention consisting in what is herein shown, describedand claimed. Figure 1 of the drawings represents a sectional view of a fragment of a storage-battery provided with tion, the plane of the section being indicated byline 1 1 in Fig. 2; Fig. 2, a plan view of a fragment of a 'cell of the battery partly in horizontal section on the plane indicated by line 22 in Fig, 1, and Fig. 3, a side elevation of the gage portion ofthe indicator.

Referring by letter to the. drawings, b indieatesthe jar, c its cover, d, e, electrodes and f, g, insulation of acell, h the submerging fluid, t a binding-post and y' a binding-post plate of a liquid-tight storage-battery, said platefbeing in union with Shanks j of elecl trodes. y

The battery-cell is vertically recessed to rovide for the immersion of a weighted hydrometer 7c, in the liquid of the'battery, andthe bulb-end of the hydrometer terminates at the bottom in an eye-shank m to which a chain n of a suitable number of linksA is attached. The hydrometer and the chain The hydrometer 1n proportion to the specific gravity of the immersing fluid s0 as to properly float itself and the chain in connection therewith when the battery is charged to its full capacity.

rlfhe elongated stem of the hydrometer is guided in a central bottom aperture of the shank p of a cylindrical shell g of insulating 1 material, preferably hard-rubber, for which a glass tube r serves as a lining. The shank p of the shell g has screw-thread engage ment with an aperture in the battery-jar cover and it is referable to have the upper end of said shellIin the form of a screw-cap s as herein shown. The shell is also fashioned to provide vertical side slots through which to expose the glass lining r and the preferably distinctively colored upper knob-terminal t of the hydrometer. 'A scale is provided on the shell g parallel to each slot therein and preferably indexed at intervals thereof as erein shown, this scale being a per-cent measure of theA charge capacity of the battery or a cell of same.

The battery being fully charged, the hydrometer is floated, as aforesaid, to indicate 100%, and as the specific gravity of the immersing liquid in said battery decreases, due to utilization of the current, there is a correspending descent of the hydrometer, Whereby the proportionately decreased per-cent of the charge in the aforesaid battery is indicated, the links of the chain a being successively piled upon the bottom of the recess in the adjacent electrode to gradually decrease the weight of said chain upon said hydrometer. Hence by observing the gage portion of the indicator, at any time, the percentage of charge in the battery can be readily determined. The aforesaid chain compensates for the commotion in the battery due to the working of parted to the hydrometer to keep the same in fixed osition until influenced by a change of speciilfc gravity in the electrolyte or fluid. This chain does not impair the utility of the hydrometer, and without said chain said hy# drometer would -be kept constantly on a quiver vertically because of the action of the gases in the battery. The battery starting at a predetermined specific gravity, the hy-A drometer is full down in the electrolyte and the chain collapsed. As the specific gravity increases, the hydrometer is proportionately floated, thereby lifting links of the chain in the same proportion and registering on the scale until the range of said scale is completed, all of said chain being then pendent.

I claim:

1, A storage-battery, eter partly immersed in the liquid contents of the battery, a stem of this hydrometer being projected through an opening in the battery-cover, a transparent gage-shell tted insaid battery-cover o ening to inclose the upper portion of the ydrometer-stem, and a chain attached to the lower bulb-end of the hydrometer, the chain being collapsed when said hydrometer is full down in the electrolyte of said battery.

2. A storage-battery, eter partly immersed in a weighted hydromsame, whereby stability is im- 1 v2li c shan bottom, sai

of the-batte i, a stem of this hydrometer being projecte through ano emngin the battery-cover, a chain attac ed to the lower bulb-end of said hydrometer, and a vertically slotted gage-shell provided With a transparent lining and itted in said battery-cover opening to inclose the upper portiony of the hydrometer-stem. v u

3. Astorage-battery charge-indlcator comprising a glass-linedvertical shell having a shank for screw-thread engagement With an aperture in the battery-cover, a vertical slot, and a scale parallel to the slot and a Weighted hydrometer for immersion in the liquid of the battery in position to have its elongated steml enga e a centrall uide a erture in the shellstem eing visible through the shell-slot. Y f' 4. A storage-battery having an element of a cell thereof vertically recessed, and a chargeindicator comprising a Weighted hydrometer for immersion 1n the recess portion of said element and a transparent gage-shell attachabl'e to the battery-cover to inclose the elongated stem of the hydrometer.

5. A storage-batte having an element of a cell thereof vertical y recessed, a Weighted hydrometer partlv submerged in the recessed ortion of said element, a stem ofthis hyz rometer being projected through an open- 30' ing in the battery-cover, a chain attached to' the loWerbulb-end of said hydrometer, a vertically slotted gage-shell provided with a transparent lining and fitted in said batterycover o ening to mclose the upper portion of 

